National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. Southwest wind 8 to 17 mph, with gusts as high as 29 mph.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain and thunderstorms, then rain likely after 3pm. Patchy fog before 10am, then patchy fog after 5pm. Otherwise, mostly cloudy, with a high near 55. Southwest wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Chance Rain
    and Patchy
    Fog then Rain
    Likely and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Rain likely. Patchy fog before 8pm. Otherwise, cloudy, with a low around 36. Northeast wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Rain Likely
    and Patchy
    Fog

  • Thursday

    Thursday: A chance of rain, mainly before 5pm. Cloudy, with a high near 43. Northeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A chance of rain, mainly after 2am. Cloudy, with a low around 37. East wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 37 °F

    Chance Rain

  • Friday

    Friday: A slight chance of rain before noon. Mostly cloudy, with a high near 53. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

    High: 53 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 43. Southwest wind around 11 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 55. Southwest wind 8 to 10 mph becoming northeast in the afternoon.

    High: 55 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41. South wind around 7 mph.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 45. Southwest wind 8 to 17 mph, with gusts as high as 29 mph.
Wednesday
A chance of rain and thunderstorms, then rain likely after 3pm. Patchy fog before 10am, then patchy fog after 5pm. Otherwise, mostly cloudy, with a high near 55. Southwest wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain likely. Patchy fog before 8pm. Otherwise, cloudy, with a low around 36. Northeast wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A chance of rain, mainly before 5pm. Cloudy, with a high near 43. Northeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of rain, mainly after 2am. Cloudy, with a low around 37. East wind 3 to 7 mph. Chance of precipitation is 30%.
Friday
A slight chance of rain before noon. Mostly cloudy, with a high near 53. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 43. Southwest wind around 11 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 55. Southwest wind 8 to 10 mph becoming northeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 41. South wind around 7 mph.
Sunday
A chance of rain after 8am. Mostly cloudy, with a high near 55. South wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 38. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Monday
Partly sunny, with a high near 48. Northwest wind around 8 mph.
Monday Night
Mostly clear, with a low around 35. North wind around 5 mph.
Tuesday
Mostly sunny, with a high near 46. North wind 5 to 8 mph becoming east in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
7:38 pm EDT Mar 31, 2026
Forecast Valid:
8pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation